When Bart turns four, he unconsciously begins to find his mother sexually attractive. He has an unconscious desire to kill his father, Homer, so that he does not have to share his mother. According to Freud, Bart is experiencing the complex.

d is the correct answer.

b is incorrect because it makes food by itself

c is incorrect because us humans don't know how to produce their own food using the sun like plants.

a is incorrect because consumers can depend on carnivores for eating food for consumers to eat the dead organism. same thing with omnivores.

stewards ice box was the purchase of alaska from russia and it was called that because people thought it was not a good idea to purchase alaska

no one should discriminated against because he or she is not from a minority group